YANGJinming,CHENYongyu,DONGJun,et al.Design of Municipal Wastewater Treatment Plant in Kunming under High Emission Standards[J].China Water & Wastewater,2026,42(6):83-89.
昆明市高排放标准下城镇污水处理厂工艺设计
- Title:
- Design of Municipal Wastewater Treatment Plant in Kunming under High Emission Standards
- Keywords:
- municipal wastewater treatment plant; high emission standards; surface water quasi?class Ⅲ criteria; dedicated denitrification; extreme phosphorus removal
- 摘要:
- 为持续改善滇池水环境质量，昆明市出台了《城镇污水处理厂主要水污染物排放限值》（DB5301/T 43—2020），其A级限值相当于地表水准Ⅲ类标准（其中TN≤5 mg/L，TP≤0.05 mg/L）。围绕该标准，分析指出污水处理的重点与难点在于TN和TP的深度去除，提出需通过强化生物处理和增设专用深度处理单元来满足排放要求。其中，二级处理可通过运行优化、药剂与载体强化及工艺改造等方式，提升生物脱氮除磷效果；深度处理需增设深度脱氮和极限除磷单元。此外，结合典型案例，对不同组合工艺在昆明市高排放标准要求下的工程应用进行分析，可为类似项目的工程设计提供技术支撑和参考。
- Abstract:
- In order to continuously improve the water quality of Dianchi Lake, Kunming has implemented Discharge Standards of Key Water Pollutants for Urban Sewage Treatment Plant (DB5301/T 43-2020). Its level A limits are equivalent to surface water quasi-class Ⅲ criteria (TN≤5 mg/L, TP≤0.05 mg/L). Focusing on this standard, the analysis indicates that advanced removal of TN and TP represents the key challenge in wastewater treatment. It is proposed to strengthen biological treatment and introduce dedicated advanced treatment units to meet the discharge requirements. Measures such as operation optimization, chemical and carrier enhancement, and process retrofitting can be applied to strengthen biological nitrogen and phosphorus removal. Advanced treatment requires the addition of dedicated denitrification and extreme phosphorus removal units. The engineering applications of different technologies under the high emission standards in Kunming are analyzed with representative cases, providing technical support and reference for the design of similar projects.
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